Help me understand the BU positioning on this play

[youngump]

Originally Posted by Manny A

Correct me if I'm wrong, because I'm a little rusty on responsibilities during rundowns. But isn't this the BU's call? He/she has (or should have) a better view of the tag on the runner's back.

By toward third I meant nearer to third than second, she was actually tagged from behind after trying to turn back to second and this one was obvious. But to be honest, responsibilities on a pickle are not something I'm great at and if she got tagged 5 feet from third from behind, I would have anticipated my partner making the call as well. Is that wrong?